Rolling- iron bars



No. 29,702. PATENTED AUG. 21, 1860.

- B. LAUTH.

ROLLING BARS, RODS, AND PLATES OF IRON AND. STEEL.

2 SHEETS-SHEET '1.

1% 2, PATENTED AUG. 21 1860,

B. LAUTH. I ROLLING BARS, RODS, ,AND PLATES OF IRON AND STEEL.

2 QHEETS-SHBET 2v.

I: v C

773 612195565 jizvend 7' BERNARD LAUTH, OF PITTSBURG, PENNSYLVANIA.

ROLLING IRON BARS, 85o.

Specification of Letters Patent No. 29,702, dated August 21, 1860.

To all whom it may concern:

Be it known that I, BERNARD LAUTI-I, of

Pittsburg, in the county of Allegheny and- State of Pennsylvania, have invented new and useful improvements 111 the process of rolling bars, rods, and plates of iron and steel to give them toughness, tenacity, and

strength, which improvements are designed toprevent any bends, waves, or warps in such bars, rods, or plates; and I do hereby declare the following to be a full, clear, and exact description'of the manner of reducing the same to practice, reference being had to the accompanying drawings, which represent certain mechanical means that may be successfully employed in reducing this process to practice and which machines are represented only to more fully and clearly set forth the nature of my invention.

In said drawings, Figures 1 and 2 represent respectively a perspective and longitudinal section of a machine in which the rod, bar or sheet is drawn through between the rolls under a longitudinal strain in a direct line, by which means, all bends, warps or kinks are prevented. Figs. 3 and 4, represent respectively a perspective and longitudinal section through a machine in which the bar, rod or sheet, is held under tension, while the rolls are drawn over it, and thus all the bends, warps or kinks are avoided.

Similar letters of reference, where they occur in the several figures, denote like parts of the machinery herein represented.

The principal object of my invention is to prevent sheets, bars, or rods of iron and steel from crimping, bending or warping, when subjected to cold rolling, as patented to me, as one of the firm of Jones and Lauth, on the 23d day of August, 1859. And the nature of my invention consists in holding sheets, bars or rods of iron under longitudinal tension, while they are being acted upon by the rolls for the purpose of preventing crimping, bending or warping, during the rolling operation.

To enable others skilled in the art to make and use my invention, I will proceed to describe certain means which I have devised for accomplishing the same, first premising that the iron to be treated, may be scaled or unsealed previous to rolling, so as to bear a polish if desired, or otherwise.

A, represents the ordinary housings, for holding the rolls B, B, and furnished with the customary adjustments for setting said rolls. These rolls may be plain or grooved, as the shape of the plates bars or rods may require. On each side of the rolls, and at proper distances therefrom, to admit of the working of the longest bars or rods, are placed other supports or housing 0, C, in which are hung two rolls D, D, those (D) underneath being furnished with pinions a, a, and also by pulleys E, by which they may be operated. On suitable guide rods 6, Z), are placed the cross heads F, F, and to each cross-head is connected a straight rack G, G, that gear respectively with the pinions a, a, and are held in gear therewith by the top rolls D. If bars or rods 0 0 0, (one, two, three or more, at a time) are to be subjected to cold rolling, either scaled or otherwise, they may be secured to the cross heads in any suitable manner, and drawn straight throu h between the rolls, so that there will be n her bends, warps, or waves in them. The tel 'on required or used to thus draw through th rods or bars, pulls out or holds out, all such ends, warps or waves as may occur, by careless handling of them, or by the action of the rolls, and they can by this process, be brought out from under the rolls, perfectly straight. To roll sheets or plates, of course plain rollers will be used, and any kind of cross head that will clamp or hold sufliciently the piece of iron to be drawn through between the rolls, and other than those I have shown may be used for this purpose. The tension must be in a true line or horizontal plane, with those parts of the rolls, which act upon the metal to be so treated, so as to keep it straight, and prevent any bends &c. The amount of pressure put upon the plates, bars or rods, will vary with their thickness or size, and the rods or bars may be run forward and back between the rolls, until they are sufliciently compressed, and may, if found desirable, be turned in"their supports by hand, or automatically, to present all parts to the rolls alike.

In this machine, the bars, rods, or plates, are moved through between the rolls. In Figs. 3 and i, I have shown another form of machine, in which the plates, rods or bars, may be held under longitudinal tension, while the rolls themselves traverse or move along over them, they being driven by a screw or other device I-I, passing through a nut I, connected with the housing, and the housing moving upon ways J, to guide them,

thus serving the purpose of the guide rods in the first described machine.

K, represents a straining device, for keeping up the tension upon the iron being rolled, and taking up all the slack that arises from the elongation of the pieces, as they become reduced in thickness, or diameter, any other straining device may be used, as for instance a weight, pulley and chain or cord, that will always draw upon the bar, to draw out, or hold out the bends or warps.

L, L, are the support or rests for the bars, rods or platesthey are on the same plane, with those parts of the rolls that operate upon the plate, bar, or rod, and hence keep them perfectly straight.

(Z, 6, f, represent gearing for setting or adjusting the top roll to the lower one, and g, h gearing for operating the screw shaft H, and this screw shaft may have a double or right and left hand thread upon it, so as to traverse the rolls both ways, and of such pitch, or have such speed, as may be most desirable for accomplishing the purpose. Many other kinds of machines may be, and no doubt, will be devised for accomplishing the object herein stated.

I confine my invention to no special machine. I should consider my invention vio; lated whenever plates, rods or bars of iron were held under longitudinal tension, while being acted upon by rollers for the purpose herein specified, that is to say, by mechanical tension, for I know that, the operation often draws the article being wrought, through the rolls, but this is not accurate and reliable enough for my purpose, as the tension must not only be mechanical, but be under suffi cient guidance to prevent it from bending or kinking the article being acted upon. It must be tension in a direct line.

Having thus fully described the nature and object of my invention, and shown how the same may be reduced to practice, what I claim as my invention, and desire to secure by Letters Patent, is-

Holding plates, rods, or bars of iron and steel under tension longitudinally by mechanical means, while they are being reduced or compressed between rollers, substantially as hcreinbefore described.

BERNARD LAUTH.

Witnesses:

B. C. LAUTH, C. J. WVILLIAMs. 

